RE: Triple 7 or Prowerdex
Looks like you have a lot of choices a head of you. Pyrodex Pellets and Triple Se7en pellets are equal in strength. Triple Se7en usually costs more then Pyrodex, even in pellet form. Triple Se7en is much easier to clean but actually all muzzleloader have to be cleaned. So if spending 5 extra minutes at the cleaning table is it worth the extra money you shell out? Go for what you think best.
Pellets VS Loose is a good topic. Many people will tell you they only shoot loose powders. I only shoot loose powders. Triple Se7en FFg loose is 15% stronger the Pyrodex RS loose. Also you never load loose Triple Se7en the same as Triple Se7en in Pellet form. If you shoot 100 grains of T-7 pellets then start your load around 85 grains of loose T-7 powder. Loose powder is cheaper in the long run. Especially for those of us that shoot a lot. If all you are going to do is load the rifle shoot a deer, clean it and store until next year, then maybe pellets are the way to go. They are much easier.
Loading 150 grains of powder is a lot of horse power in your rifle. Unless your going to be shooting 200+ yards I see no reason for the 150 grain loads. All that 150 grains really does is kick the devil out of your shoulder, wear your rifle out faster by stressing it more, and accuracy is not usually the best with 150 grains of powder. It was more a selling hype put on my the gun makers to get yo to spend those sporting good dollars. They wanted you to see how fast and powerful their new muzzleloaders were. They forgot to tell you that accuracy is extra.
Actually 100 grains is plenty in most cases. Many shooters find 120 grains a good level. Some rifles hate heavy charges. You're going to have to try your rifle out and see what kind of accuracy you get with different charges. In many of my inlines I shoot 80 grains of loose powder. I do not shoot over 100 yards and that is all I need to push a projectile out there with plenty of knock down power. My T/C favors 100+ grains and a faster projectile. My CVA likes the lighter charges, but the accuracy is outstanding in all of them. I spent a lot of range time to learn what they like. Any of them I would be ready to shoot 120 yards without a blink. Shooting 200 yards on the other hand takes a lot of practice. Practice with your rifle at the ranges you might encounter. You owe that to the animals we hunt to be humane with our shots.
Good luck.. you have a great rifle from all I have read on them. I have a Wolverine II and with 80 grains and a Knight Red hot sabot we are ready to make some venison....